NuTone 391 Central Vacuum Bags

For optimal suction and motor health, you should replace the bag every 30 to 60 days. A good rule of thumb is to change it once the bag is about two-thirds full to prevent clogs and maintain airflow.

These bags are designed for broad compatibility and fit a wide range of major brands, including NuTone, Beam, AstroVac, Broan, Cyclovac, Dynavac, Easyflo, Eureka, Filteraire, Frigidaire, Husky, and Vacuflo. Before purchasing, confirm your unit uses a 2-inch diameter connection to ensure a secure fit.

No, these are single-use paper bags and are not designed to be washed or reused. Reusing a bag can compromise the filtration efficiency and potentially damage your vacuum motor by allowing fine dust to escape.

Each bag has a 6-gallon capacity, which is approximately 22.71 liters. This size is ideal for extended cleaning sessions, allowing you to vacuum multiple rooms before needing a replacement.

These bags measure 25 1/2 inches by 7 3/4 inches with a 2-inch connection diameter. It is best to measure your current bag or the interior space of your canister to ensure these dimensions will accommodate your specific vacuum model.